Composition for controlling plant diseases and method for controlling plant diseases

ABSTRACT

PROBLEM 
     There are provided a composition for controlling plant diseases and a method for controlling plant diseases having excellent control effect for plant diseases. 
     SOLUTION 
     A composition for controlling plant diseases comprising, as active ingredients, a compound represented by formula (1) wherein X 1  represents a methyl group, a difluoromethyl group or an ethyl group; X 2  represents a methoxy group or a methylamino group; and X 3  represents a phenyl group, a 2-methylphenyl group or a 2,5-dimethylphenyl group, and at least one compound selected from the group consisting of tolclofos-methyl, metalaxyl and mefenoxam, and a method for controlling plant diseases using the composition.

TECHNICAL FIELD

The present invention relates to a composition for controlling plantdiseases and a method for controlling plant diseases.

BACKGROUND ART

α-Substituted phenylacetic acid compounds, tolclofos-methyl, metalaxyland mefenoxam are conventionally known as active ingredients of agentsfor controlling plant diseases (see, for example, Patent Document 1 andNon-Patent Document 1). Nevertheless, there is a continuing need formore highly active agents for controlling plant diseases.

-   Patent Document 1: WO 95/27,693-   Non-Patent Document 1: “The Pesticide Manual—14th edition” published    by BCPC, ISBN: 1901396142

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention

An object of the present invention is to provide a composition forcontrolling plant diseases and a method for controlling plant diseases,having excellent control effect for plant diseases, and so on.

Means for Solving the Problems

The present invention provides a composition for controlling plantdiseases and a method for controlling plant diseases, having an improvedcontrol effect for plant diseases by combining a compound represented bythe following formula (1) with a specific germicidally active compound.

Specifically, the present invention takes the following constitutions.

[1] A composition for controlling plant diseases comprising, as activeingredients, a compound represented by formula (1):

wherein X¹ represents a methyl group, a difluoromethyl group or an ethylgroup; X² represents a methoxy group or a methylamino group; and X³represents a phenyl group, a 2-methylphenyl group or a2,5-dimethylphenyl group;

and at least one compound selected from the group consisting oftolclofos-methyl, metalaxyl and mefenoxam;

[2] The composition according to [1], which has a weight ratio of thecompound represented by formula (1) to the at least one compoundselected from the group consisting of tolclofos-methyl, metalaxyl andmefenoxam falling within the range of from 0.0125:1 to 500:1;

[3] A seed treatment agent comprising the compound represented byformula (1) of [1] and at least one compound selected from the groupconsisting of tolclofos-methyl, metalaxyl and mefenoxam as activeingredients;

[4] A plant seed treated with effective amounts of the compoundrepresented by formula (1) of [1] and at least one compound selectedfrom the group consisting of tolclofos-methyl, metalaxyl and mefenoxam;

[5] A method for controlling plant diseases which comprises applyingeffective amounts of the compound represented by formula (1) of [1] andat least one compound selected from the group consisting oftolclofos-methyl, metalaxyl and mefenoxam to a plant or a locus where aplant is allowed to grow; and

[6] Combined use for controlling plant diseases of the acid compoundrepresented by formula (1) of [1] and at least one compound selectedfrom the group consisting of tolclofos-methyl, metalaxyl and mefenoxam;and so on.

Advantage of the Invention

The composition according to the present invention exhibits an excellentcontrol effect for plant diseases.

BEST MODE FOR CARRYING OUT THE INVENTION

The compound represented by formula (1) for use in the composition forcontrolling plant diseases according to the present invention isdescribed.

Examples of the compound represented by formula (1) includes thefollowing compounds.

A compound in which X¹ is a methyl group, a difluoromethyl group or anethyl group in formula (1);

a compound in which X¹ is a methyl group in formula (1);

a compound in which X² is a methoxy group or a methylamino group informula (1);

a compound in which X¹ is a methyl group and X² is a methoxy group informula (1);

a compound in which X¹ is a methyl group and X² is methylamino group informula (1);

a compound in which X³ is a phenyl group, a 2-methylphenyl group or a2,5-dimethylphenyl group in formula (1);

a compound in which X³ is a phenyl group or a 2,5-dimethylphenyl groupin formula (1);

a compound in which X¹ is a methyl group, X² is a methoxy group, and X³is a 2,5-dimethylphenyl group in formula (1);

a compound in which X¹ is a methyl group, X² is methylamino group, andX³ is a phenyl group in formula (1); and

a compound in which X¹ is a methyl group, X² is methylamino group, andX³ is a 2,5-dimethylphenyl group in formula (1).

Next, specific examples of the compound represented by formula (1) areshown.

In the compound represented by formula (1), X¹, X², X³ are one of thecombinations of substituents shown in Table 1.

TABLE 1 X¹ X² X³ CH₃ OCH₃ Ph CH₃ OCH₃ 2-CH₃Ph CH₃ OCH₃ 2,5-(CH₃)₂Ph CH₃NHCH₃ Ph CH₃ NHCH₃ 2-CH₃Ph CH₃ NHCH₃ 2,5-(CH₃)₂Ph CHF₂ OCH₃ Ph CHF₂ OCH₃2-CH₃Ph CHF₂ OCH₃ 2,5-(CH₃)₂Ph CHF₂ NHCH₃ Ph CHF₂ NHCH₃ 2-CH₃Ph CHF₂NHCH₃ 2,5-(CH₃)₂Ph C₂H₅ OCH₃ Ph C₂H₅ OCH₃ 2-CH₃Ph C₂H₅ OCH₃ 2,5-(CH₃)₂PhC₂H₅ NHCH₃ Ph C₂H₅ NHCH₃ 2-CH₃Ph C₂H₅ NHCH₃ 2,5-(CH₃)₂Ph

The compound represented by formula (1) may have isomers such asstereoisomers such as optical isomers based on an asymmetric carbonatoms and tautomers, and any isomer can be contained and used solely orin a mixture of any isomer ratio in the present invention.

The compound represented by formula (1) may be in a form of a solvate(for example, hydrate) and it can be used in a form of a solvate in thepresent invention.

The compound represented by formula (1) may be in a form of a crystalform and/or an amorphous form and it can be used in any form in thepresent invention.

The compound represented by formula (1) is a compound described inWO95/27,693 pamphlet. These compounds can be synthesized, for example,by a method described in the pamphlet.

Next, the germicidally active compound for use in the composition forcontrolling plant diseases according to the present invention incombination with the compound represented by formula (1) is at least onecompound selected from the group consisting of tolclofos-methyl,metalaxyl and mefenoxam. All of the germicidally active compoundsincluded in this group are well-known compounds, such as those describedin “The Pesticide Manual—14th edition” published by BCPC,ISBN:1901396142, pp. 1043, 678 and 679. These compounds can be obtainedfrom commercial agents or prepared using well-known methods.

In the composition for controlling plant diseases according to thepresent invention, the weight ratio of the compound represented byformula (1) to the compound(s) selected from the group consisting oftolclofos-methyl, metalaxyl and mefenoxam is typically in the range of0.0125:1 to 500:1, preferably 0.025:1 to 100:1. In addition, when usedas a dusting powder, the range of 0.025:1 to 40:1 is more preferable,and when used as a seed treatment agent, the range of 0.25:1 to 100:1 ismore preferable.

The composition for controlling plant diseases according to the presentinvention may be a simple mixture of the compound represented by formula(1) and the compound selected from the group consisting oftolclofos-methyl, metalaxyl and mefenoxam. Alternatively, thecomposition for controlling plant diseases is typically produced bymixing the compound represented by formula (1) and the compound selectedfrom the group consisting of tolclofos-methyl, metalaxyl and mefenoxamwith an inert carrier, and adding to the mixture a surfactant and otheradjuvants as needed so that the mixture can be formulated into an oilagent, an emulsion, a flowable agent, a wettable powder, a granulatedwettable powder, a powder agent, a granule agent and so on. Thecomposition for controlling the compound(s) mentioned above can be usedas a seed treatment agent of the present invention as it is or addedwith other inert ingredients.

In the composition for controlling plant diseases according to thepresent invention, the total amount of the compound represented byformula (1) and the compound(s) selected from the group consisting oftolclofos-methyl, metalaxyl and mefenoxam is typically in the range of0.1 to 99% by weight, preferably 0.2 to 90% by weight.

Examples of the solid carrier used in formulation include fine powdersor granules such as minerals such as kaolin clay, attapulgite clay,bentonite, montmorillonite, acid white clay, pyrophyllite, talc,diatomaceous earth and calcite; natural organic materials such as cornrachis powder and walnut husk powder; synthetic organic materials suchas urea; salts such as calcium carbonate and ammonium sulfate; syntheticinorganic materials such as synthetic hydrated silicon oxide; and as aliquid carrier, aromatic hydrocarbons such as xylene, alkylbenzene andmethylnaphthalene; alcohols such as 2-propanol, ethyleneglycol,propylene glycol, and ethylene glycol monoethyl ether; ketones such asacetone, cyclohexanone and isophorone; vegetable oil such as soybean oiland cotton seed oil; petroleum aliphatic hydrocarbons, esters,dimethylsulfoxide, acetonitrile and water.

Examples of the surfactant include anionic surfactants such as alkylsulfate ester salts, alkylaryl sulfonate salts, dialkyl sulfosuccinatesalts, polyoxyethylene alkylaryl ether phosphate ester salts,lignosulfonate salts and naphthalene sulfonate formaldehydepolycondensates; and nonionic surfactants such as polyoxyethylene alkylaryl ethers, polyoxyethylene alkylpolyoxypropylene block copolymers andsorbitan fatty acid esters and cationic surfactants such asalkyltrimethylammonium salts.

Examples of the other formulation auxiliary agents include water-solublepolymers such as polyvinyl alcohol and polyvinylpyrrolidone,polysaccharides such as Arabic gum, alginic acid and the salt thereof,CMC (carboxymethyl-cellulose), Xanthan gum, inorganic materials such asaluminum magnesium silicate and alumina sol, preservatives, coloringagents and stabilization agents such as PAP (acid phosphate isopropyl)and BHT.

The composition for controlling plant diseases according to the presentinvention is effective for the following plant diseases and the like.

Diseases of rice: blast (Magnaporthe grisea), Helminthosporium leaf spot(Cochliobolus miyabeanus), sheath blight (Rhizoctonia solani), andbakanae disease (Gibberella fujikuroi).

Diseases of wheat: powdery mildew (Erysiphe graminis), Fusarium headblight (Fusarium graminearum, F. avenacerum, F. culmorum, Microdochiumnivale), rust (Puccinia striiformis, P. graminis, P. recondita), pinksnow mold (Micronectriella nivale), Typhula snow blight (Typhula sp.),loose smut (Ustilago tritici), bunt (Tilletia caries), eyespot(Pseudocercosporella herpotrichoides), leaf blotch (Mycosphaerellagraminicola), glume blotch (Stagonospora nodorum), and yellow spot(Pyrenophora tritici-repentis).

Diseases of barley: powdery mildew (Erysiphe graminis), Fusarium headblight (Fusarium graminearum, F. avenacerum, F. culmorum, Microdochiumnivale), rust (Puccinia striiformis, P. graminis, P. hordei), loose smut(Ustilago nuda), scald (Rhynchosporium secalis), net blotch (Pyrenophorateres), spot blotch (Cochliobolus sativus), leaf stripe (Pyrenophoragraminea), and Rhizoctonia damping-off (Rhizoctonia solani).

Diseases of corn: smut (Ustilago maydis), brown spot (Cochliobolusheterostrophus), copper spot (Gloeocercospora sorghi), southern rust(Puccinia polysora), gray leaf spot (Cercospora zeae-maydis), andRhizoctonia damping-off (Rhizoctonia solani).

Diseases of citrus: melanose (Diaporthe citri), scab (Elsinoe fawcetti),penicillium rot (Penicillium digitatum, P. italicum), and brown rot(Phytophthora parasitica, Phytophthora citrophthora).

Diseases of apple: blossom blight (Monilinia mali), canker (Valsaceratosperma), powdery mildew (Podosphaera leucotricha), Alternaria leafspot (Alternaria alternata apple pathotype), scab (Venturia inaequalis),bitter rot (Colletotrichum acutatum), crown rot (Phytophtora cactorum),blotch (Diplocarpon mali), and ring rot (Botryosphaeria berengeriana).

Diseases of pear: scab (Venturia nashicola, V. pirina), black spot(Alternaria alternata Japanese pear pathotype), rust (Gymnosporangiumharaeanum), and phytophthora fruit rot (Phytophtora cactorum);

Diseases of peach: brown rot (Monilinia fructicola), scab (Cladosporiumcarpophilum), and phomopsis rot (Phomopsis sp.).

Diseases of grape: anthracnose (Elsinoe ampelina), ripe rot (Glomerellacingulata), powdery mildew (Uncinula necator), rust (Phakopsoraampelopsidis), black rot (Guignardia bidwellii), and downy mildew(Plasmopara viticola).

Diseases of Japanese persimmon: anthracnose (Gloeosporium kaki), andleaf spot (Cercospora kaki, Mycosphaerella nawae).

Diseases of gourd: anthracnose (Colletotrichum lagenarium), powderymildew (Sphaerotheca fuliginea), gummy stem blight (Mycosphaerellamelonis), Fusarium wilt (Fusarium oxysporum), downy mildew(Pseudoperonospora cubensis), Phytophthora rot (Phytophthora sp.), anddamping-off (Pythium sp.);

Diseases of tomato: early blight (Alternaria solani), leaf mold(Cladosporium fulvum), and late blight (Phytophthora infestans).

Diseases of eggplant: brown spot (Phomopsis vexans), and powdery mildew(Erysiphe cichoracearum).

Diseases of cruciferous vegetables: Alternaria leaf spot (Alternariajaponica), white spot (Cercosporella brassicae), clubroot(Plasmodiophora brassicae), and downy mildew (Peronospora parasitica).

Diseases of welsh onion: rust (Puccinia allii), and downy mildew(Peronospora destructor).

Diseases of soybean: purple seed stain (Cercospora kikuchii), sphacelomascad (Elsinoe glycines), pod and stem blight (Diaporthe phaseolorum var.sojae), septoria brown spot (Septoria glycines), frogeye leaf spot(Cercospora sojina), rust (Phakopsora pachyrhizi), brown stem rot(Phytophthora sojae), and Rhizoctonia damping-off (Rhizoctonia solani).

Diseases of kidney bean: anthracnose (Colletotrichum lindemthianum).

Diseases of peanut: leaf spot (Cercospora personata), brown leaf spot(Cercospora arachidicola) and southern blight (Sclerotium rolfsii).

Diseases of garden pea: powdery mildew (Erysiphe pisi), and root rot(Fusarium solani f. sp. pisi).

Diseases of potato: early blight (Alternaria solani), late blight(Phytophthora infestans), pink rot (Phytophthora erythroseptica),powdery scab (Spongospora subterranean f. sp. subterranea) and blackscurf (Rhizoctonia solani).

Diseases of strawberry: powdery mildew (Sphaerotheca humuli), andanthracnose (Glomerella cingulata).

Diseases of tea: net blister blight (Exobasidium reticulatum), whitescab (Elsinoe leucospila), gray blight (Pestalotiopsis sp.), andanthracnose (Colletotrichum theae-sinensis).

Diseases of tobacco: brown spot (Alternaria longipes), powdery mildew(Erysiphe cichoracearum), anthracnose (Colletotrichum tabacum), downymildew (Peronospora tabacina), and black shank (Phytophthoranicotianae).

Diseases of rapeseed: sclerotinia rot (Sclerotinia sclerotiorum), andRhizoctonia damping-off (Rhizoctonia solani).

Diseases of cotton: Rhizoctonia damping-off (Rhizoctonia solani).

Diseases of sugar beat: Cercospora leaf spot (Cercospora beticola), leafblight (Thanatephorus cucumeris), Root rot (Thanatephorus cucumeris),and Aphanomyces root rot (Aphanomyces cochlioides).

Diseases of rose: black spot (Diplocarpon rosae), powdery mildew(Sphaerotheca pannosa), and downy mildew (Peronospora sparsa).

Diseases of chrysanthemum and asteraceous plants: downy mildew (Bremialactucae), leaf blight (Septoria chrysanthemi-indici), and white rust(Puccinia horiana).

Diseases of various groups: diseases caused by Pythium spp. (Pythiumaphanidermatum, Pythium debarianum, Pythium graminicola, Pythiumirregulare, Pythium ultimum), gray mold (Botrytis cinerea), andSclerotinia rot (Sclerotinia sclerotiorum).

Disease of Japanese radish: Alternaria leaf spot (Alternariabrassicicola).

Diseases of turfgrass: dollar spot (Sclerotinia homeocarpa), and brownpatch and large patch (Rhizoctonia solani).

Disease of banana: sigatoka (Mycosphaerella fijiensis, Mycosphaerellamusicola).

Disease of sunflower: downy mildew (Plasmopara halstedii).

Seed diseases or diseases in the early stages of the growth of variousplants caused by bacteria of Aspergillus genus, Penicillium genus,Fusarium genus, Gibberella genus, Tricoderma genus, Thielaviopsis genus,Rhizopus genus, Mucor genus, Corticium genus, Phoma genus, Rhizoctoniagenus and Diplodia genus.

Viral diseases of various plants mediated by Polymixa genus or theOlpidium genus and so on.

plant diseases can be controlled by applying effective amounts of thecompound represented by formula (1) and the compound(s) selected fromthe group consisting of tolclofos-methyl, metalaxyl and mefenoxam to theplant pathogens or a place where the plant pathogens inhabit or a place(plant, soil) where the plant pathogens may inhabit.

Plant diseases can be controlled by applying effective amounts of thecompound represented by formula (1) and the compound(s) selected fromthe group consisting of tolclofos-methyl, metalaxyl and mefenoxam to aplant or a place where a plant is allowed to grow. As a plant which isthe object of application, stalk and leaves of the plant, seed of theplant, bulbs of the plant can be included. Here, the bulb means a bulb,corm, rhizoma, stem tuber, root tuber and rhizophore.

When the application is conducted to plant diseases, a plant or the soilwhere the plant is allowed to grow, the compound represented by formula(1) and the compound(s) selected from the group consisting oftolclofos-methyl, metalaxyl and mefenoxam may be separately applied forthe same period, but they are typically applied as a composition forcontrolling plant diseases of the present invention from the viewpointof simplicity of the application.

The controlling method of the present invention includes treatment ofstalk and leaves of a plant, treatment of the place where the plant isallowed to grow such as the soil, treatment of the seeds such as seedsterilization/seed coating and treatment of the bulb such as potatosets.

As the treatment of stalk and leaves of a plant in the control method ofthe present invention, specifically, for example, application onto thesurface of the plant such as spraying to the stalk and leaves andspraying to the trunk can be included.

As the treatment of the soil in the control method of the presentinvention, for example, spraying onto the soil, admixing with the soil,perfusion of an agent liquid into the soil (irrigation of an agentliquid, injection into the soil, dripping of an agent liquid) can beincluded and the examples of the place to be treated include a plantinghole, a furrow, peripheral of the planting hole, peripheral of theplanting furrow, the entire surface of the growing area, the partsbetween the soil and the plant, area between roots, area beneath thetrunk, main furrow, growing soil, box for raising seedlings, tray forraising seedlings, seedbed. The treatment can be performed beforedissemination, at the time of dissemination, immediately after thedissemination, during the raising period of seedlings, before settledplanting, at the time of settled planting and growing time after settledplanting. In the soil treatment mentioned above, the active ingredientsmay be applied to the plant at the same time, or solid manure such aspaste manure containing the active ingredients may be applied to thesoil. The active ingredients may be mixed in irrigating liquid, and, forexample, may be injected to irrigating facilities (irrigating tube,irrigating pipe, sprinkler, etc.), mixed into the flooding liquidbetween furrows, or mixed into a water culture medium. Alternatively,the irrigating liquid and the active ingredients may be mixed beforehandand, for example, used for treatment by an appropriate irrigating methodincluding the irrigating method mentioned above and the other methodssuch as sprinkling and flooding.

Treatment of a seed in the control method of the present invention is,for example, a method for treating a seed, a bulb or the like to beprotected from plant diseases with a composition for controlling plantdiseases of the present invention and specific examples thereof includea spraying treatment in which a suspension of the composition forcontrolling plant diseases of the present invention is atomized andsprayed on the seed surface or the bulb surface; smearing treatment inwhich a wettable powder, an emulsion, a flowable agent or the like ofthe composition for controlling plant diseases of the present inventionas it is or added with a small amount of water is applied on the seedsurface or the bulb surface; immersing treatment in which the seed isimmersed in a solution of the composition for controlling plant diseasesof the present invention for a certain period of time; film coatingtreatment and pellet coating treatment.

When a plant or the soil for growing a plant is treated with a compoundrepresented by formula (1) and compound(s) selected from the groupconsisting of tolclofos-methyl, metalaxyl and mefenoxam, the amount forthe treatment may be changed depending on the kind of the plant to betreated, the kind and the occurring frequency of the diseases to becontrolled, formulation form, treatment period, climatic condition andso on but the total amount of the compound represented by formula (1)and the compound(s) selected from the group consisting oftolclofos-methyl, metalaxyl and mefenoxam (hereinbelow referred to asthe amount of the active ingredients) per 10,000m² is typically 1 to5000 g and preferably 2 to 200 g.

The emulsion, wettable powder, flowable agent or the like is typicallydiluted with water, and then sprinkled for treatment. In this case, theconcentration of the active ingredients is typically in the range of0.0001 to 3% by weight and preferably 0.0005 to 1% by weight. The powderagent, granule agent or the like is typically used for treatment withoutdilution.

In the treatment of seeds, the amount of the applied active ingredientsis typically in the range of 0.001 to 20 g, preferably 0.01 to 5 g per 1kg of seeds.

The control method of the present invention can be used in agriculturallands such as fields, paddy fields, lawns and orchards or innon-agricultural lands.

The present invention can be used to control diseases in agriculturallands for cultivating the following “plant” and the like withoutadversely affecting the plant and so on.

Examples of the crops are as follows:

crops: corn, rice, wheat, barley, rye, oat, sorghum, cotton, soybean,peanut, buckwheat, beet, rapeseed, sunflower, sugar cane, tobacco, etc.;

vegetables: solanaceous vegetables (eggplant, tomato, pimento, pepper,potato, etc.), cucurbitaceous vegetables (cucumber, pumpkin, zucchini,water melon, melon, squash, etc.), cruciferous vegetables (Japaneseradish, white turnip, horseradish, kohlrabi, Chinese cabbage, cabbage,leaf mustard, broccoli, cauliflower, etc.), asteraceous vegetables(burdock, crown daisy, artichoke, lettuce, etc.), liliaceous vegetables(green onion, onion, garlic, and asparagus), ammiaceous vegetables(carrot, parsley, celery, parsnip, etc.), chenopodiaceous vegetables(spinach, Swiss chard, etc.), lamiaceous vegetables (Perilla frutescens,mint, basil, etc.), strawberry, sweet potato, Dioscorea japonica,colocasia, etc.,

flowers,

foliage plants,

turf grasses,

fruits: pomaceous fruits (apple, pear, Japanese pear, Chinese quince,quince, etc.), stone fleshy fruits (peach, plum, nectarine, Prunus mume,cherry fruit, apricot, prune, etc.), citrus fruits (Citrus unshiu,orange, lemon, rime, grapefruit, etc.), nuts (chestnuts, walnuts,hazelnuts, almond, pistachio, cashew nuts, macadamia nuts, etc.),berries (blueberry, cranberry, blackberry, raspberry, etc.), grape, kakifruit, olive, Japanese plum, banana, coffee, date palm, coconuts, etc.,

trees other than fruit trees; tea, mulberry, flowering plant, roadsidetrees (ash, birch, dogwood, Eucalyptus, Ginkgo biloba, lilac, maple,Quercus, poplar, Judas tree, Liquidambar formosana, plane tree, zelkova,Japanese arborvitae, fir wood, hemlock, juniper, Pinus, Picea, and Taxuscuspidate), etc.

The aforementioned “plants” include plants, to which resistance to HPPDinhibitors such as isoxaflutole, ALS inhibitors such as imazethapyr orthifensulfuron-methyl, EPSP synthetase inhibitors such as glyphosate,glutamine synthetase inhibitors such as the glufosinate, acetyl-CoAcarboxylase inhibitors such as sethoxydim, PPO inhibitors such asflumioxazin, and herbicides such as bromoxynil, dicamba, 2,4-D, etc. hasbeen conferred by a classical breeding method or genetic engineeringtechnique.

Examples of a “plant” on which resistance has been conferred by aclassical breeding method include rape, wheat, sunflower and riceresistant to imidazolinone ALS inhibitory herbicides such asimazethapyr, which are already commercially available under a productname of Clearfield (registered trademark). Similarly, there is soy beanon which resistance to sulfonylurea ALS inhibitory herbicides such asthifensulfuron-methyl has been conferred by a classical breeding method,which is already commercially available under a product name of STS soybean. Similarly, examples on which resistance to acetyl-CoA carboxylaseinhibitors such as trione oxime or aryloxy phenoxypropionic acidherbicides has been conferred by a classical breeding method include SRcorn. The plant on which resistance to acetyl-CoA carboxylase inhibitorshas been conferred is described in Proceedings of the National Academyof Sciences of the United States of America (Proc. Natl. Acad. Sci.USA), vol. 87, pp. 7175-7179 (1990). A variation of acetyl-CoAcarboxylase resistant to an acetyl-CoA carboxylase inhibitor is reportedin Weed Science, vol. 53, pp. 728-746 (2005) and a plant resistant toacetyl-CoA carboxylase inhibitors can be generated by introducing a geneof such an acetyl-CoA carboxylase variation into a plant by geneticallyengineering technology, or by introducing a variation conferringresistance into a plant acetyl-CoA carboxylase. Furthermore, plantsresistant to acetyl-CoA carboxylase inhibitors or ALS inhibitors or thelike can be generated by introducing a site-directed amino acidsubstitution variation into an acetyl-CoA carboxylase gene or the ALSgene of the plant by introduction a nucleic acid into which has beenintroduced a base substitution variation represented ChimeraplastyTechnique (Gura T. 1999. Repairing the Genome's Spelling Mistakes.Science 285: 316-318) into a plant cell.

Examples of a plant on which resistance has been conferred by geneticengineering technology include corn, soy bean, cotton, rape, sugar beetresistant to glyphosate, which is already commercially available under aproduct name of RoundupReady (registered trademark), AgrisureGT, etc.Similarly, there are corn, soy bean, cotton and rape which are maderesistant to glufosinate by genetic engineering technology, a kind,which is already commercially available under a product name ofLibertyLink (registered trademark). A cotton made resistant tobromoxynil by genetic engineering technology is already commerciallyavailable under a product name of BXN likewise.

The aforementioned “plants” include genetically engineered cropsproduced using such genetic engineering techniques, which, for example,are able to synthesize selective toxins as known in genus Bacillus.

Examples of toxins expressed in such genetically engineered cropsinclude: insecticidal proteins derived from Bacillus cereus or Bacilluspopilliae; δ-endotoxins such as Cry1Ab, Cry1Ac, Cry1F, Cry1Fa2, Cry2Ab,Cry3A, Cry3Bb1 or Cry9C, derived from Bacillus thuringiensis;insecticidal proteins such as VIP1, VIP2, VIP3, or VIP3A; insecticidalproteins derived from nematodes; toxins generated by animals, such asscorpion toxin, spider toxin, bee toxin, or insect-specific neurotoxins;mold fungi toxins; plant lectin; agglutinin; protease inhibitors such asa trypsin inhibitor, a serine protease inhibitor, patatin, cystatin, ora papain inhibitor; ribosome-inactivating proteins (RIP) such as lycine,corn-RIP, abrin, luffin, saporin, or briodin; steroid-metabolizingenzymes such as 3-hydroxysteroid oxidase, ecdysteroid-UDP-glucosyltransferase, or cholesterol oxidase; an ecdysone inhibitor; HMG-COAreductase; ion channel inhibitors such as a sodium channel inhibitor orcalcium channel inhibitor; juvenile hormone esterase; a diuretic hormonereceptor; stilbene synthase; bibenzyl synthase; chitinase; andglucanase.

Moreover, toxins expressed in such genetically engineered crops alsoinclude: hybrid toxins of δ-endotoxin proteins such as Cry1Ab, Cry1Ac,Cry1F, Cry1Fa2, Cry2Ab, Cry3A, Cry3Bb1, Cry9C, Cry34Ab or Cry35Ab andinsecticidal proteins such as VIP1, VIP2, VIP3 or VIP3A; partiallydeleted toxins; and modified toxins. Such hybrid toxins are producedfrom a new combination of the different domains of such proteins, usinga genetic engineering technique. As a partially deleted toxin, Cry1Abcomprising a deletion of a portion of an amino acid sequence has beenknown. A modified toxin is produced by substitution of one or multipleamino acids of natural toxins.

Examples of such toxins and genetically engineered plants capable ofsynthesizing such toxins are described in EP-A-0 374 753, WO 93/07278,WO 95/34656, EP-A-0 427 529, EP-A-451 878, WO 03/052073, etc.

Toxins contained in such genetically engineered plants are able toconfer resistance particularly to insect pests belonging to Coleoptera,Hemiptera, Diptera, Lepidoptera and Nematodes, to the plants.

Furthermore, genetically engineered plants, which comprise one ormultiple insecticidal pest-resistant genes and which express one ormultiple toxins, have already been known, and some of such geneticallyengineered plants have already been on the market. Examples of suchgenetically engineered plants include YieldGard (registered trademark)(a corn variety for expressing Cry1Ab toxin), YieldGard Rootworm(registered trademark) (a corn variety for expressing Cry3Bb1 toxin),YieldGard Plus (registered trademark) (a corn variety for expressingCry1Ab and Cry3Bb1 toxins), Herculex I (registered trademark) (a cornvariety for expressing phosphinotricine N-acetyl transferase (PAT) so asto confer resistance to Cry1Fa2 toxin and glufosinate), NuCOTN33B(registered trademark) (a cotton variety for expressing Cry1Ac toxin),Bollgard I (registered trademark) (a cotton variety for expressingCry1Ac toxin), Bollgard II (registered trademark) (a cotton variety forexpressing Cry1Ac and Cry2Ab toxins), VIPCOT (registered trademark) (acotton variety for expressing VIP toxin), NewLeaf (registered trademark)(a potato variety for expressing Cry3A toxin), NatureGard (registeredtrademark) Agrisure (registered trademark) GT Advantage (GA21glyphosate-resistant trait), Agrisure (registered trademark) CBAdvantage (Bt11 corn borer (CB) trait), and Protecta (registeredtrademark).

The aforementioned “plants” also include crops produced using a geneticengineering technique, which have ability to generate antipathogenicsubstances having selective action.

A PR protein and the like have been known as such antipathogenicsubstances (PRPs, EP-A-0 392 225). Such antipathogenic substances andgenetically engineered crops that generate them are described in EP-A-0392 225, WO 95/33818, EP-A-0 353 191, etc.

Examples of such antipathogenic substances expressed in geneticallyengineered crops include: ion channel inhibitors such as a sodiumchannel inhibitor or a calcium channel inhibitor (KP1, KP4 and KP6toxins, etc., which are produced by viruses, have been known); stilbenesynthase; bibenzyl synthase; chitinase; glucanase; a PR protein; andantipathogenic substances generated by microorganisms, such as a peptideantibiotic, an antibiotic having a hetero ring, a protein factorassociated with resistance to plant diseases (which is called a plantdisease-resistant gene and is described in WO 03/000906). Theseantipathogenic substances and genetically engineered plants producingsuch substances are described in EP-A-0392225, WO95/33818, EP-A-0353191,etc.

The “plant” mentioned above includes plants on which advantageouscharacters such as characters improved in oil stuff ingredients orcharacters having reinforced amino acid content have been conferred bygenetically engineering technology. Examples thereof include VISTIVE(registered trademark) (low linolenic soy bean having reduced linoleniccontent) or high-lysine (high-oil) corn (corn with increased lysine oroil content).

Furthermore, stack varieties are also included in which a plurality ofadvantageous characters such as the classic herbicide charactersmentioned above or herbicide tolerance genes, insecticidal harmfulinsect resistance genes, antipathogenic substance producing genes,characters improved in oil stuff ingredients or characters havingreinforced amino acid content are combined.

Examples of the diseases on which a high control effect is expectedamong the above include Rhizoctonia damping-off (Rhizoctonia solani) ofwheat, corn, rice, soybean, cotton, rapeseed, sugar beat and turfgrass,damping-off and root rot of wheat, barley, corn, rice, sorghum, soybean,cotton, rapeseed, sugar beat and turfgrass caused by Pythium spp.(Pythium aphanidermatum, Pythium debarianum, Pythium graminicola,Pythium irregulare, Pythium ultimum), seed diseases and diseases in theearly stages of the growth of wheat, corn, cotton, soybean, rapeseed andturfgrass caused by Fusarium spp., pink snow mold (Microdochium nivale),Rhizoctonia damping-off (Rhizoctonia solani), Fusarium head blight(Fusarium graminearum, F. avenacerum, F. culmorum, Microdochium nivale)and eyespot (Pseudocercosporella herpotrichoides) of wheat, diseases ofcitrus: melanose (Diaporthe citri) and scab (Elsinoe fawcetti), purpleseed stain (Cercospora kikuchii), rust (Phakopsora pachyrhizi) and brownstem rot (Phytophthora sojae) of soybean, black shank (Phytophthoranicotianae) of tobacco, Rhizoctonia damping-off (Rhizoctonia solani) ofcotton, Rhizoctonia damping-off (Rhizoctonia solani) and sclerotinia rot(Sclerotinia sclerotiorum) of rapeseed, anthracnose (Elsinoe ampelina),ripe rot (Glomerella cingulata), powdery mildew (Uncinula necator),black rot (Guignardia bidwellii) and gray mold (Botrytis cinerea) ofgrape, dollar spot (Sclerotinia homeocarpa) and brown patch (Rhizoctoniasolani) of turfgrass, scab (Venturia nashicola, V. pirina) of pear,blossom blight (Monilinia mali), scab (Venturia inaequalis), powderymildew (Podosphaera leucotricha), blotch (Diplocarpon mali) and ring rot(Botryosphaeria berengeriana) of apple, brown rot (Monilinia fructicola)and phomopsis rot (Phomopsis sp.) of peach, early leaf spot (Cercosporaarachidicola) of peanut, gray blight (Pestalotiopsis sp.) andanthracnose (Colletotrichum theae-sinensis) of tea, Cercospora leaf spot(Cercospora beticola), leaf blight (Thanatephorus cucumeris), root rot(Thanatephorus cucumeris) and Aphanomyces root rot (Aphanomycescochlioides) of sugar beat, sigatoka (Mycosphaerella fijiensis,Mycosphaerella musicola) of banana, blast (Magnaporthe grisea) andbakanae disease (Gibberella fujikuroi) of rice, Rhizoctonia damping-off(Rhizoctonia solani) of gourd, downy mildew (Plasmopara halstedii) ofsunflower, late blight (Phytophthora infestans) and black scarf(Rhizoctonia solani) of potato, dollar spot (Sclerotinia homeocarpa),and brown patch and large patch (Rhizoctonia solani) of turfgrass, graymold (Botrytis cinerea) and Sclerotinia rot (Sclerotinia sclerotiorum)of the other crops.

Examples of the diseases on which a particularly high control effect isexpected among the above include Rhizoctonia damping-off (Rhizoctoniasolani) of wheat, corn, rice, soybean, cotton, rapeseed, sugar beat andturfgrass, damping-off and root rot of wheat, barley, corn, rice,sorghum, soybean, cotton, rapeseed, sugar beat and turfgrass caused byPythium spp. (Pythium aphanidermatum, Pythium debarianum, Pythiumgraminicola, Pythium irregulare, Pythium ultimum), seed diseases anddiseases in the early stages of the growth of wheat, corn, cotton,soybean, rapeseed and turfgrass caused by Fusarium spp., brown stem rot(Phytophthora sojae) of soybean, black shank (Phytophthora nicotianae)of tobacco, downy mildew (Plasmopara halstedii) of sunflower, lateblight (Phytophthora infestans) and black scarf of potato, dollar spot(Sclerotinia homeocarpa), and brown patch and large patch (Rhizoctoniasolani) of turfgrass, Aphanomyces root rot (Aphanomyces cochlioides) ofsugar beat, gray mold (Botrytis cinerea) and Sclerotinia rot(Sclerotinia sclerotiorum) of the other crops.

EXAMPLES

In the following, the present invention will be more specificallydescribed by way of formulation examples, seed treatment formulationexamples, and test examples. However, the present invention is notlimited to the following examples. In the following examples, the partrepresents part by weight unless otherwise noted in particular.

The compound (1a) is a compound represented by formula (1) wherein X¹ isa methyl group, X² is a methylamino group, and X³ is a2,5-dimethylphenyl group and the compound has an R type steric structureaccording to Cahn-Ingold-Prelog order rule, and represented by thefollowing formula (1a).

The compound (1b) is a compound represented by formula (1) wherein X¹ isa methyl group, X² is a methylamino group, and X³ is a2,5-dimethylphenyl group and the compound is an racemic body andrepresented by the following formula (1b).

Formulation Example 1

2.5 Parts of the compound (1a) or the compound (1b), 1.25 parts oftolclofos-methyl, 14 parts of polyoxyethylene styrylphenyl ether, 6parts of calcium dodecyl benzene sulfonate and 76.25 parts of xylene arefully mixed, so as to obtain respective emulsions.

Formulation Example 2

5 Parts of the compound (1a) or the compound (1b), 5 parts of metalaxyl,35 parts of a mixture of white carbon and a polyoxyethylene alkyl ethersulfate ammonium salt (weight ratio 1:1) and 55 parts of water aremixed, and the mixture is subjected to fine grinding according to a wetgrinding method, so as to obtain respective flowable agents.

Formulation Example 3

5 Parts of the compound (1a) or the compound (1b), 10 parts ofmefenoxam, 1.5 parts of sorbitan trioleate and 28.5 parts of an aqueoussolution containing 2 parts of polyvinyl alcohol are mixed, and themixture is subjected to fine grinding according to a wet grindingmethod. Thereafter, 45 parts of an aqueous solution containing 0.05 partof Xanthan gum and 0.1 part of aluminum magnesium silicate is added tothe resultant mixture, and 10 parts of propylene glycol is further addedthereto. The obtained mixture is blended by stirring, so as to obtainrespective flowables.

Formulation Example 4

5 Parts of the compound (1a) or the compound (1b), 20 parts oftolclofos-methyl, 1.5 parts of sorbitan trioleate and 23.5 parts of anaqueous solution containing 2 parts of polyvinyl alcohol are mixed, andthe mixture is subjected to fine grinding according to a wet grindingmethod. Thereafter, 40 parts of an aqueous solution containing 0.05 partof Xanthan gum and 0.1 part of aluminum magnesium silicate is added tothe resultant mixtre, and 10 parts of propylene glycol is further addedthereto. The obtained mixture is blended by stirring, so as to obtainrespective flowable formulations.

Formulation Example 5

40 Parts of the compound (1a) or the compound (1b), 5 parts ofmetalaxyl, 5 parts of propylene glycol (manufactured by Nacalai Tesque),5 parts of SoprophorFLK (manufactured by Rhodia Nikka), 0.2 parts of ananti-form C emulsion (manufactured by Dow Corning), 0.3 parts of proxelGXL (manufactured by Arch Chemicals) and 49.5 parts of ion-exchangewater are mixed so as to obtain a bulk slurry. 150 parts of glass beads(diameter=1 mm) are put into 100 parts of the slurry, and the slurry isground for 2 hours while being cooled with a cooling water. Afterground, the resultant is filtered to remove the glass beads andrespective flowables were obtained.

Formulation Example 6

50 Parts of the compound (1a) or the compound (1b), 0.5 part ofmefenoxam, 38.5 parts of NN kaolin clay (manufactured by TakeharaChemical Industrial), 10 parts of MorwetD425 and 1 part of MorwerEFW(manufactured by Akzo Nobel Corp.) are mixed to obtain an AI premix.This premix was ground with a jet mill so as to obtain respectivepowders.

Formulation Example 7

1 Part of the compound (1a) or the compound (1b), 4 parts oftolclofos-methyl, 1 part of synthetic hydrated silicon oxide, 2 parts ofcalcium lignin sulfonate, 30 parts of bentonite and 62 parts of kaolinclay are fully ground and mixed, and the resultant mixture is added withwater and fully kneaded, and then subjected to granulation and drying soas to obtain respective granules.

Formulation Example 8

1 Part of the compound (1a) or the compound (1b), 40 parts of metalaxyl,3 parts of calcium lignin sulfonate, 2 parts of sodium lauryl sulfateand 54 parts of synthetic hydrated silicon oxide are fully ground andmixed so as to obtain respective wettable powders.

Formulation Example 9

1 Part of the compound (1a) or the compound (1b), 2 parts of mefenoxam,85 parts of kaolin clay and 12 parts of talc are fully ground and mixedso as to obtain respective powders.

Formulation Example 10

2 Parts of the compound (1a) or the compound (1b), 0.25 part oftolclofos-methyl, 14 parts of polyoxyethylene styrylphenyl ether, 6parts of calcium dodecyl benzene sulfonate and 77.75 parts of xylene arefully mixed, so as to obtain respective emulsions.

Formulation Example 11

10 Parts of the compound (1a) or the compound (1b), 2.5 parts ofmetalaxyl, 1.5 parts of sorbitan trioleate, 30 parts of an aqueoussolution containing 2 parts of polyvinyl alcohol are subjected to finegrinding according to a wet grinding method. Thereafter, 46 parts of anaqueous solution containing 0.05 part of Xanthan gum and 0.1 part ofaluminum magnesium silicate is added to the ground solution, and 10parts of propylene glycol is further added thereto. The obtained mixtureis blended by stirring, so as to obtain respective flowables.

Formulation Example 12

1 Part of the compound (1a) or the compound (1b), 20 parts of mefenoxam,1 part of synthetic hydrated silicon oxide, 2 parts of calcium ligninsulfonate, 30 parts of bentonite and 47 parts of kaolin clay are groundand mixed, and the resultant mixture is added with water and fullykneaded, and then subjected granulation and drying so as to obtainrespective granules.

Formulation Example 13

40 Parts of the compound (1a) or the compound (1b), 1 part oftolclofos-methyl, 3 parts of calcium lignin sulfonate, 2 parts of sodiumlauryl sulfate and 54 parts of synthetic hydrated silicon oxide arefully ground and mixed so as to obtain respective wettable powders.

Formulation Example 14

2.5 Parts of the compound (1a) or the compound (1b), 1.25 parts ofmetalaxyl, 14 parts of polyoxyethylene styrylphenyl ether, 6 parts ofcalcium dodecyl benzene sulfonate and 76.25 parts of xylene are fullymixed, so as to obtain respective emulsions.

Formulation Example 15

5 Parts of the compound (1a) or the compound (1b), 5 parts of mefenoxam,35 parts of a mixture of white carbon and a polyoxyethylene alkyl ethersulfate ammonium salt (weight ratio 1:1) and 55 parts of water aremixed, and the mixture is subjected to fine grinding according to a wetgrinding method, so as to obtain respective flowable agents.

Formulation Example 16

5 Parts of the compound (1a) or the compound (1b), 10 parts oftolclofos-methyl, 1.5 parts of sorbitan trioleate and 28.5 parts of anaqueous solution containing 2 parts of polyvinyl alcohol are mixed, andthe mixture is subjected to fine grinding according to a wet grindingmethod. Thereafter, 45 parts of an aqueous solution containing 0.05 partof Xanthan gum and 0.1 part of aluminum magnesium silicate is added tothe resultant mixture, and 10 parts of propylene glycol is further addedthereto. The obtained mixture is blended by stirring, so as to obtainrespective flowables.

Formulation Example 17

5 Parts of the compound (1a) or the compound (1b), 20 parts ofmetalaxyl, 1.5 parts of sorbitan trioleate and 28.5 parts of an aqueoussolution containing 2 parts of polyvinyl alcohol are mixed, and themixture is subjected to fine grinding according to a wet grindingmethod. Thereafter, 45 parts of an aqueous solution containing 0.05 partof Xanthan gum and 0.1 part of aluminum magnesium silicate is added tothe resultant mixture, and 10 parts of propylene glycol is further addedthereto. The obtained mixture is blended by stirring, so as to obtainrespective flowable formulations.

Formulation Example 18

40 Parts of the compound (1a) or the compound (1b), 5 parts ofmefenoxam, 5 parts of propylene glycol (manufactured by Nacalai Tesque),5 parts of SoprophorFLK (manufactured by Rhodia Nikka), 0.2 parts of ananti-form C emulsion (manufactured by Dow Corning), 0.3 parts of proxelGXL (manufactured by Arch Chemicals) and 49.5 parts of ion-exchangewater are mixed so as to obtain a bulk slurry. 150 parts of glass beads(diameter=1 mm) are put into 100 parts of the slurry, and the slurry isground for 2 hours while being cooled with a cooling water. Afterground, the resultant is filtered to remove the glass beads andrespective flowables were obtained.

Formulation Example 19a

50 Parts of the compound (1a) or the compound (1b), 0.5 part oftolclofos-methyl, 38.5 parts of NN kaolin clay (manufactured by TakeharaChemical Industrial), 10 parts of MorwetD425 and 1 part of MorwerEFW(manufactured by Akzo Nobel Corp.) are mixed to obtain an AI premix.This premix was ground with a jet mill so as to obtain respectivepowders.

Formulation Example 19b

1 Part of the compound (1a) or the compound (1b), 4 parts of metalaxyl,1 part of synthetic hydrated silicon oxide, 2 parts of calcium ligninsulfonate, 30 parts of bentonite and 62 parts of kaolin clay are fullyground and mixed, and the resultant mixture is added with water andfully kneaded, and then subjected to granulation and drying so as toobtain respective granules.

Formulation Example 20

1 Part of the compound (1a) or the compound (1b), 40 parts of mefenoxam,3 parts of calcium lignin sulfonate, 2 parts of sodium lauryl sulfateand 54 parts of synthetic hydrated silicon oxide are fully ground andmixed so as to obtain respective wettable powders.

Formulation Example 21

1 Part of the compound (1a) or the compound (1b), 2 parts oftolclofos-methyl, 87 parts of kaolin clay and 10 parts of talc are fullyground and mixed so as to obtain respective powders.

Formulation Example 22

2 Parts of the compound (1a) or the compound (1b), 0.25 part ofmetalaxyl, 14 parts of polyoxyethylene styrylphenyl ether, 6 parts ofcalcium dodecyl benzene sulfonate and 77.75 parts of xylene are fullymixed, so as to obtain respective emulsions.

Formulation Example 23

10 Parts of the compound (1a) or the compound (1b), 2.5 parts ofmefenoxam, 1.5 parts of sorbitan trioleate, 30 parts of an aqueoussolution containing 2 parts of polyvinyl alcohol are subjected to finegrinding according to a wet grinding method. Thereafter, 46 parts of anaqueous solution containing 0.05 part of Xanthan gum and 0.1 part ofaluminum magnesium silicate is added to the ground solution, and 10parts of propylene glycol is further added thereto. The obtained mixtureis blended by stirring, so as to obtain respective flowables.

Formulation Example 24

1 Part of the compound (1a) or the compound (1b), 20 parts oftolclofos-methyl, 1 part of synthetic hydrated silicon oxide, 2 parts ofcalcium lignin sulfonate, 30 parts of bentonite and 46 parts of kaolinclay are ground and mixed, and the resultant mixture is added with waterand fully kneaded, and then subjected granulation and drying so as toobtain respective granules.

Formulation Example 25

40 Parts of the compound (1a) or the compound (1b), 1 part of metalaxyl,3 parts of calcium lignin sulfonate, 2 parts of sodium lauryl sulfateand 54 parts of synthetic hydrated silicon oxide are fully ground andmixed so as to obtain respective wettable powders.

Seed Treatment Example 1

An emulsion prepared as in Formulation example 1 is used for smeartreatment in an amount of 500 ml per 100 kg of dried sorghum seeds usinga rotary seed treatment machine (seed dresser, produced by Hans-UlrichHege GmbH) so as to obtain treated seeds.

Seed Treatment Example 2

A flowable prepared as in Formulation example 16 is used for smeartreatment in an amount of 50 ml per 10 kg of dried rape seeds using arotary seed treatment machine (seed dresser, produced by Hans-UlrichHege GmbH) so as to obtain treated seeds.

Seed Treatment Example 3

A flowable prepared as in Formulation example 17 is used for smeartreatment in an amount of 40 ml per 10 kg of dried corn seeds using arotary seed treatment machine (seed dresser, produced by Hans-UlrichHege GmbH) so as to obtain treated seeds.

Seed Treatment Example 4

5 Parts of a flowable agent prepared as in

Formulation example 18, 5 parts of pigment BPD6135 (manufactured by SunChemical) and 35 parts of water are mixed to prepare a mixture. Themixture is used for smear treatment in an amount of 60 ml per 10 kg ofdried rice seeds using a rotary seed treatment machine (seed dresser,produced by Hans-Ulrich Hege GmbH) so as to obtain treated seeds.

Seed Treatment Example 5

A powder agent prepared as in Formulation example 19a is used for powdercoating treatment in an amount of 50 g per 10 kg of dried corn seeds soas to obtain treated seeds.

Seed Treatment Example 6

An emulsion prepared as in Formulation example 22 is used for smeartreatment in an amount of 500 ml per 100 kg of dried sugar beet seedsusing a rotary seed treatment machine (seed dresser, produced byHans-Ulrich Hege GmbH) so as to obtain treated seeds.

Seed Treatment Example 7

A flowable prepared as in Formulation example 23 is used for smeartreatment in an amount of 50 ml per 10 kg of dried soy bean seeds usinga rotary seed treatment machine (seed dresser, produced by Hans-UlrichHege GmbH) so as to obtain treated seeds.

Seed Treatment Example 8

A granule agent prepared as in Formulation example 24 is used for smeartreatment in an amount of 50 ml per 10 kg of dried wheat seeds using arotary seed treatment machine (seed dresser, produced by Hans-UlrichHege GmbH) so as to obtain treated seeds.

Seed Treatment Example 9

5 Parts of a wettable powder prepared as in Formulation example 25, 5parts of pigment BPD6135 (manufactured by Sun Chemical) and 35 parts ofwater are mixed and the resultant mixture is used for smear treatment inan amount of 70 ml per 10 kg of potato tuber pieces using a rotary seedtreatment machine (seed dresser, produced by Hans-Ulrich Hege GmbH) soas to obtain treated seeds.

Seed Treatment Example 10

A wettable powder prepared as in Formulation example 20 is used forpowder coating treatment in an amount of 40 g per 10 kg of dried cottonseeds so as to obtain treated seeds.

Test Example 1

An acetone solution of compound (1b) and an acetone solution oftolclofos-methyl were mixed so as to prepare mixed liquids containingcompound (1b) and tolclofos-methyl in predetermined concentration. Thesemixed liquids were used for smear treatment of cucumber (Sagamihanjiro)seeds using a rotary seed treatment machine (seed dresser, produced byHans-Ulrich Hege GmbH) so as to obtain treated seeds. The treated seedswere left untouched overnight and then disseminated on the soil whichfilled a plastic pot and covered with the soil containing Rhizoctoniasolani, pathogen of cucumber damping-off, which had been cultured on abran medium. They were allowed to grow in a greenhouse while irrigatedand the number of non-budding seeds was checked on the seventh day afterthe dissemination and the incidence of disease was calculated byEquation 3. The control value was calculated by Equation 1 based on theincidence of disease. The incidence of disease was also checked in thecase in which the plants had not been treated with the agent in order tocalculate the control value.

As a comparison, a compound (1b) liquid and a tolclofos-methyl liquidrespectively in the predetermined concentration were prepared as theabove-mentioned acetone solution and subjected to similar tests.

The results are shown in Table 2.

Control value=100(A−B)/A   “Equation 1”

A: Incidence of disease of plant in untreated area

B: Incidence of disease of plant in treated area

Generally, the control value expected for the case where the given twokinds of active ingredient compounds are mixed and used for thetreatment, the so-called control value expectation is calculated fromthe following Colby's calculating equation.

E=X+Y−(X×Y)/100   “Equation 2”

X: Control value (%) when active ingredient compound A is used fortreatment in M g per hectare or in M g per 100 kg of seeds

Y: Control value (%) when active ingredient compound B is used fortreatment in N g per hectare or in N g per 100 kg of seeds

E: Control value (%) expected for the case where active ingredientcompound A in M g per hectare or in M g per 100 kg of seeds and activeingredient compound B in N g per hectare or in N g per 100 kg of seedsare mixed and used for treatment (hereinbelow referred to as “controlvalue expectation”)

“Synergetic effect”=(Actual control value)×100/(Control valueexpectation)

Incidence of disease=(Number of no budding seeds)×100/(Number of totaldisseminated seeds)   “Equation 3”

TABLE 2 Control Actual value Synergistic Compound Tolclofos- controlexpecta- effect (1b) methyl value tion (%) 1 g/100 kg-seed 10 g/100kg-seed 96 87 110.3 1 g/100 kg-seed  0 g/100 kg-seed 30 — — 0 g/100kg-seed 10 g/100 kg-seed 57 — —

Test Example 2

A plastic pot was filled with sandy soil. Turfgrass (bentgrasspenncross) was disseminated and allowed to grow in a green house for 3weeks. A wettable powder of compound (1b) and a wettable powder oftolclofos-methyl (Grancer Wettable Powder manufactured by Nihon Green &Garden Corporation) were respectively diluted with water and thentank-mixed so as to prepare tank-mixed liquids containing compound (1b)and tolclofos-methyl in predetermined concentration. The tank-mixedliquids were subjected to foliage application such that they could besufficiently adhered to the leaves of the aforementioned turfgrass.Thereafter, the plants were air-dried. After the plants were air-dried,Sclerotinia homeocarpa, pathogen of dollar spot of turfgrass, which hadbeen cultured on a bran medium was sprayed on the plants to be treatedfrom above. Then, the plants were placed in a greenhouse at 19° C. to23° C. under high humidity for 14 days, and thereafter control effectwas checked. The diseased area ratio of the pot plants on which theagents had been sprayed was determined as the incidence of disease atthe time of checking and the control value calculated by Equation 1based on the incidence of disease thus determined. In order to calculatethe control value, the incidence of disease was also determined in thecase in which the plants had not been treated with the agent.

As a comparison, the respective wettable powders described above werediluted with water in predetermined concentration so as to prepare acompound (1b) liquid and a tolclofos-methyl liquid respectively and theywere subjected to similar tests.

The results are shown in Table 3.

TABLE 3 Actual Control control value Synergistic Compound Tolclofos-value expectation effect (1b) methyl (%) (%) (%) 150 g/ha 600 g/ha 10086.7 115.4 150 g/ha 150 g/ha 100 81.5 122.7 150 g/ha 37.5 g/ha  98.771.3 138.6 150 g/ha  0 g/ha 67.2 — —  0 g/ha 600 g/ha 59.3 — —  0 g/ha150 g/ha 43.7 — —  0 g/ha 37.5 g/ha  12.4 — —

Test Example 3

A plastic pot was filled with sandy soil. Turfgrass (bentgrasspenncross) was disseminated and allowed to grow in a green house for 3weeks. A wettable powder of compound (1b) and a wettable powder oftolclofos-methyl (Grancer Wettable Powder manufactured by Nihon Green &Garden Corporation) were respectively diluted with water and thentank-mixed so as to prepare tank-mixed liquids containing compound (1b)and tolclofos-methyl in predetermined concentration. The tank-mixedliquids were subjected to foliage application such that they could besufficiently adhered to the leaves of the aforementioned turfgrass.Thereafter, the plants were air-dried. After the plants were air-dried,Rhizoctonia solani, pathogen of brown patch of turfgrass, which had beencultured on a bran medium was sprayed on the plants to be treated fromabove. Then, the plants were placed in a greenhouse at 19° C. to 23° C.under high humidity for 14 days, and thereafter control effect waschecked. The diseased area ratio of the pot plants on which the agentshad been sprayed was determined as the incidence of disease at the timeof checking and the control value was calculated by Equation 1 based onthe incidence of disease thus determined. In order to calculate thecontrol value, the incidence of disease was also determined in the casein which the plants had not been treated with the agent.

As a comparison, the respective wettable powders described above werediluted with water in predetermined concentration so as to prepare acompound (1b) liquid and a tolclofos-methyl liquid respectively and theywere subjected to similar tests.

The results are shown in Table 4.

TABLE 4 Control Actual value Synergistic Compound Tolclofos- controlexpecta- effect (1b) methyl value tion (%) 37.5 g/ha 37.5 g/ha 90 61.5146.3  9.4 g/ha 37.5 g/ha 80 51 156.7 37.5 g/ha   0 g/ha 45 — —  9.4g/ha   0 g/ha 30 — —   0 g/ha 37.5g/ha 30 — —

Test Example 4

An acetone solution of compound (1b) and an acetone solution ofmetalaxyl were mixed so as to prepare mixed liquids containing compound(1b) and metalaxyl in predetermined concentration. These mixed liquidswere adhered on the surface of cucumber (Sagamihanjiro) seeds so as toobtain treated seeds. The treated seeds were left untouched overnightand then disseminated on the soil which filled a plastic pot and coveredwith the soil containing Pythium irregulare, pathogen of cucumberdamping-off, which had been cultured on a bran medium. They were allowedto grow in a greenhouse while irrigated and the number of non-buddingseeds was checked on the seventh day after the dissemination and theincidence of disease was calculated by Equation 3. The control value wascalculated by Equation 1 based on the incidence of disease. In order tocalculate the control value, the incidence of disease was alsodetermined in the case in which the plants had not been treated with theagent.

As a comparison, a compound (1b) liquid and a metalaxyl liquidrespectively in the predetermined concentration were prepared as theabove-mentioned acetone solution and subjected to similar tests.

The results are shown in Table 5.

TABLE 5 Actual Control Synergistic Compound control value effect (1b)Metalaxyl value expectation (%) 0.005 g/100 0.0025 g/100 62 37 182kg-seed kg-seed 0.005 g/100 0.00125 g/100 62 49 143 kg-seed kg-seed0.005 g/100 0 g/100 25 — — kg-seed kg-seed 0 g/100 0.0025 g/100 12.5 — —kg-seed kg-seed 0 g/100 0.00125 g/100 25 — — kg-seed kg-seed

Test Example 5

An acetone solution of compound (1b) and an acetone solution ofmefenoxam were mixed so as to prepare mixed liquids containing compound(1b) and mefenoxam in predetermined concentration. These mixed liquidswere adhered on the surface of cucumber (Sagamihanjiro) seeds so as toobtain treated seeds. The treated seeds were left untouched overnightand then disseminated on the soil which filled a plastic pot and coveredwith the soil containing Pythium irregulare, pathogen of cucumberdamping-off, which had been cultured on a bran medium. They were allowedto grow in a greenhouse while irrigated and the number of non-buddingseeds was checked on the seventh day after the dissemination and theincidence of disease was calculated by Equation 3. The control value wascalculated by Equation 1 based on the incidence of disease. In order tocalculate the control value, the incidence of disease was alsodetermined in the case in which the plants had not been treated with theagent.

As a comparison, a compound (1b) liquid and a mefenoxam liquidrespectively in the predetermined concentration were prepared as theabove-mentioned acetone solution and subjected to similar tests.

The results are shown in Table 6.

TABLE 6 Actual Control Synergistic Compound control value effect (1b)Mefenoxam value expectation (%) 0.005 g/100 0.005 g/100 75 63 120kg-seed kg-seed 0.005 g/100 0.00125 g/100 63 44 143 kg-seed kg-seed0.005 g/100 0 g/100 25 — — kg-seed kg-seed 0 g/100 0.005 g/100 50 — —kg-seed kg-seed 0 g/100 0.00125 g/100 25 — — kg-seed kg-seed

INDUSTRIAL APPLICABILITY

According to the present invention, a composition for controlling plantdiseases having high activity, and a method for effectively controllingplant diseases, and so on can be provided.

1. A composition for controlling plant diseases comprising, as activeingredients, a compound represented by formula (1):

wherein X¹ represents a methyl group, a difluoromethyl group or an ethylgroup; X² represents a methoxy group or a methylamino group; and X³represents a phenyl group, a 2-methylphenyl group or a2,5-dimethylphenyl group; and at least one compound selected from thegroup consisting of tolclofos-methyl, metalaxyl and mefenoxam.
 2. Thecomposition according to claim 1, which has a weight ratio of thecompound represented by formula (1) to the at least one compoundselected from the group consisting of tolclofos-methyl, metalaxyl andmefenoxam falling within the range of from 0.0125:1 to 500:1.
 3. A seedtreatment agent comprising the compound represented by formula (1) ofclaim 1 and at least one compound selected from the group consisting oftolclofos-methyl, metalaxyl and mefenoxam as active ingredients.
 4. Aplant seed treated with effective amounts of the compound represented byformula (1) of claim 1 and at least one compound selected from the groupconsisting of tolclofos-methyl, metalaxyl and mefenoxam.
 5. A method forcontrolling plant diseases which comprises applying effective amounts ofthe compound represented by formula (1) of claim 1 and at least onecompound selected from the group consisting of tolclofos-methyl,metalaxyl and mefenoxam to a plant or a locus where a plant is allowedto grow.
 6. Combined use of the compound represented by formula (1) ofclaim 1 and at least one compound selected from the group consisting oftolclofos-methyl, metalaxyl and mefenoxam for controlling plantdiseases.